Bobbin-cleaning mechanism.



D. L. CHANDLER.

BOBBIN CLEANING MECHANISM.

APPLICATION FILED OCT. 26. 1914.

3 SHEETS-SHEET l.

Patented July 6, 1915.

Wnesses:

COLUMBIA PLANOORAPN c0.. WASHINGTON. D. c.

D. L. CHANDLER.

0 aossm CLEANING MECHANISM APPLICATION FILED 0CT.26. I914. I 1,145,000, Patented July 6, 1915.

I 3 $HEETS-SHEET 2- m m M w D. L. CHANDLER. 50 mm CLEANING MECHANISM.

Patented July 6, 1915.

3 SHEETS-SHEET 3.

APPLICATION FILED .OCT. 26 1914.

,JZ eazzdla:

COLUMBIA PLANOGRAPH conwAsflmmoN, D. c.

rrnn sra'rns ra'rn ort on.

DANIEL L. CT-IANDLER, 0F AYER, MASSACHUSETTS, ASSIG-NORTO FITCHBURG- BOBBIN v CLEANING MACHINE (30., OF FITCHBURG, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

To all whom '52, may concern Be it known-that I, DANIEL L. CHANDLER, a citizen of the United States, residing at Ayer, in the county of Middlesex and State of Massachusetts, have invented a new and useful Bobbin- Cleaning Mechanism, of which the following is a specification.

This invention relates to mechanism for cleaning bobbins and particularly to the parts for taking the. material directly from the bobbins. It can be used with any. desired mechanism for feeding the bobbins and for discharging them as well as for disposingof the lint after it is removed.

The principal objects of the invention: are a to provide simple mechanism that will effectually take the filling from bobbins of that type provided with circumferential grooves and more specifically to provide 00- acting mechanism for first loosening the tight portion of filling usually found near the butt of the bobbin and thereafter ef"-- fectually taking all filling out of the grooves and from the remainder of the bobbin; also to provide improved means for actuating the successive stripping and cleaning jaws and especially to provide an improved form of cleaning jaw which will effectually clean the above specified type of bobbin aswell as all other ordinary types.

The invention also involves other features of construction as will appear hereinafter.

Reference isv to be had to the accompanying drawings in which Figure 1 is a side, view of-a bobbin stripping machine showing a preferred form of this invention applied thereto with the parts in the position assumed at the'end of the stroke; Fig. 2 is a similar view showing the parts at the beginning of the stroke; Fig. 3 is an enlarged side view showing the parts in'the position shown in Fig. 1 and illustrating details of the jaws and connected parts; Fig. 4 is a plan of the'same showing the racks in section; Fig. 5' is a sectional view on the vertical line -55 of Fig. 3; Fig. 6 is an end elevation of the cleaning jaws showing their supporting studs Fig. 7 is a side view ofthe cleaningjaws as shown in full lines on Fig. 6; Fig. 8 is a planof one of the cleaning jaws; Fig. 9 is a sectional view of the same on the line 9-9 of Fig. 8, and Fig. 10 is a side elevation of the cams for operating the jaws. 1

Specification of Letters-Patent.

Patented July 6, 1915.

' Application filed October 26, 1914. Serial No. 868,642.

Although the principles of this invention can be applied to many types of bobbin stripplng machines they are especially adapted to that form shown in my application for patent, Ser. -No. 822,698, filed link. This slide traverses over a guide 43 mounted on the frame 10 of the machine. It will be'understood that the wheel is oper ated in'any desired wayto bring each bob bin to be stripped into horizontal position and that the slide 42 is moved back and "forth on the guide 43 for the purpose of stripping the bobbins, the. slide being provided with bobbin stripping means. This bobbin stripping means constitutesthe subject matter of this application. The bobbin is held from motion during the stripping action by a stud 35. p

a The slide 42 is provided with opposite openings 44 therethrough across which pass two studs 45 and 46. On each of these studs are pivoted arms for useinremoving the filling from the bobbin. Two arms 47 are shown, each provided with a steel knife jaw 48. Each of these arms is free to turnon its stud and on them are gear segments 49 and 49 respectively. These two gear segments mesh with each other. One of them, 49, meshes with the teeth of a reciprocating rack 50. This rack has a projection 51on the back by which it is reciprocated in a manner that will appear later. One ofthese arms is provided with a stud 52 thereon for limiting thetapproach of the arms to each other. It will be obvious that this rack can be reciprocated toturn the arm andjaws from the, position shown in dotted lines in Fig. 5, in-which they are housed within the openings 44 of the slide 4.2,ito the position shown in full lines in the same figure where theyapproach the bobbin and engage the filling so as to remove it' upon being forced along the bobbin. The other two arms 53 are operated 'by gear segments in the same way, a rack 54 being provided for that purpose. Each one is provided with a cleaner jaw head n I n the pin to permit a reciprocation of the jaws. They are guided in slots in the heads 57 projecting to one side for receiving the- Inv this case, they are made:

jaws proper.

for the purpose of engaging the filling in .the grooves of the bobbin a plurality of times during the passage of the jaws over them and thus rolling the filling out of the grooveswhen it shows a tendency to stick.

' For thispurpose each of these heads is in position by means of a pin 56 which is made of substantially semi-cylindrical form and is provided with aplurality of movable jaws 55 therein. In this case'three of these are shown in each head. They are secured fixed to'the head. .The three jaws 55 are provided with perforations 58 larger than so that they can move radially. Each of the outer two jaws 55 is forced inwardly bya spring 59 while the middle one is forced inwardly by a flat spring 60 which also engages. thehead 57 and is secured to it for the 'purposeof forcing the-head itself towardthebobbin as well as the central jaw. The inner edge of each jaw is provided with teeth 61-"for the'purpose ofv engaging the threads. A preferred Way of making these heads and jaws is to take a piece of metal v .and turn it up to a cylindrical form with a flange 63 on the end and bore" it outat the center. Then it is'cut in two through the center and slots cut into it in any desired way for" the purpose of receiving the jaws 55.

are then temporarily secured together. A

- tap is forced in through them to form threads on the'i'nner surfaces of the heads and jaws. These threads constitute the teeth 61 and serve to engage the filling when the device is used. ,The diameter on which these-teeth arecur'ved, that is the diameter of ithje tap, is made larger than the largest diameter of-the spindle of the bobbin that fillingp but the corners will not dig into has tobe engaged them. Thus the middle' portions ofthe teeth will engage the the bobbin. As shown, the surfaces are roundedand cutoff atthe points 645 and 64 for the purpose o'f'convenience in applying the device to themachineand permittingit to be housed within the :opening- 44: and

folded back into the dotted line "position shown in'Fig. 6, and for clearing the bobbin atthe, ends of the teeth. 5

For the purpose of operating'the two racks 50 and 54 and their projections 51-and the frame 10 of the machine is-provided with cam tracks. The upper cam track is used to 'engage the projection 51 BJHdj thUS operate. the slide 50. For this purpose'it is. shown as comprising a straight groove 67 bounded at the bottom by aj'so'lid proje'ction 68. At the end of this1-projecti n 68 is a slanting groove 69 communicating with 'tion 79.

The jaws are then inserted and the two members'which have been cut 'apart.

the-groove 67 at the top. Below the prov .jection 68 is another groove 70 parallel with it and communicating with the groove69.

A spring-pressed switch 71 yields to permit'the projection 51 to rise up an'incline 72' and to guide it up on a ledge 73 when the slide is moving back. But when the slide moves forward this switch receives the projection 51 and forces it up intothe groove 67. The top of the groove 70, or rather the' bottom of the projection'685 constitutespositive means for preventing the knife jaws moving apart too far on the" operative stroke. The other cam is'of a similar nature. It comprises a groove 74 which,

guiding iton the ledge 78.1 It then springs up and letsit come back down the inclinayieldingly holding it downi given the operation will be clear. Theiboh Each rack has a spring .82rfor Fromthe description which has been;

bins are brought aroundinto horizontal position in any desired way and the-machinery is'so timed that when a bobbin isin the proper place the slide {l2 can move back toward the bobbin support. As it moves back both projections 51 and 65 are 'supported in the upper slots 67 and 76 respectively. Just before the slide; reaches the end of its stroke the upper projection 51" encounters the inclined groove 69 and is ready to'drop back into the slot 7 0. At the same time the projection 65 rides out on the;

i switch 80 to the ledge 78 and as the parts start back they are iny'this position,v as

shown in Fig. 2. This allows the knife openfor a while. Now as the slide moves back the knife jaws are in contact with the whichusuallyis found at the large enld of the bobbin. This isfwhy these. jaws are filling on 'the'bobbin' and force off the filling I made of'steel and arranged toengage'the bobbin only at its largest diameter. Asthe slide continues tomove these jaws remain inthe same position andalthough they would remove-any filling sticking up from the sur-- face of the bobbin, they do not again come close enoughlto thebobbin itself to remove all filling therefrom. 'It has been found in practice thatthey do not underthese circumstances; remove the 'filling"fr'om the come down the incline 79 into the slot 74.

, grooves shown in thebobbin. 'As the slide 'moves' forward' from the 1 position shown in Fig. 2 the projection 65 is permitted to 110 "jaws to close and keeps the cleaning jaws a I i after the knife jaws have moved along the bobbin a short distance. In this way the cleaning jaws are brought into contact-with the bobbin and they are pressed against the bobbin by the pressure of the springs 59 and 60 throughout the remainder of the travel of the slide in that direction. Thus although the arms and heads are kept in constant position the jaws. 55 are held in contact with the bobbin, or rather the filling there- .on, by spring pressure throughout the rest 1 of the travel. The action of these cleaning The teeth with which whichany thread lies in succession. Conthread if it does not yield immediately. It

i c has been found in practice that with three of these jaws on each side, each provided with a plurality of threads or teeth, the filling will actually be drawn out of the grooves and effectually removed from the bobbins. Toward the end of the stroke in this direction the projection comes out from under the switch 7 5, but remains in the same posi I tion- At the, same time the projection 51 moves up under the switch 71 and is held in a half-open position. .As the slide starts back both these projections are lifted and the jaws are opened wide shortly after the slide starts to move back toward the bobbin support.

Although I have illustrated and describ d only a single embodiment of the invention and shown it as applied only to a single type of cleaning machines, I am well aware of the fact that the invention can be carried out in other forms and applied to many types of bobbin cleaning machines without departing from the scope thereof as expressed in the claims. Therefore I do not wish to be limited inthese respects, but

What I do claim is 1. In a bobbin cleaner, the combination with a support for a bobbin, of means adapted to move along a bobbin while on the support, and two sets of jaws carried by said means for operating on thebobbin to re-v 'move the filling therefrom.

2. In a bobbin cleaner, the combination with a support for a bobbin, of means adapted to move along abobbin while on the support, and two sets of jaws carried by said means, one behind the other and adapted to operate on the same bobbin during a single stroke of said means. I

3. In a bobbin cleaner, the combination with a support for a bobbin, of means adapt-c ed to move along a bobbin while on the support and two sets of jaws carried by said means for removing the filling therefrom, one of said sets of jaws having knife edges for engaging the filling and stripping it off at the large end of the bobbin and the other set of jaws having a plurality of teeth for successively engaging each particle of filling remaining.

l. In a bobbin cleaner, the combination of means adapted to move along a bobbin, two sets of jaws carried by said means to remove the filling therefrom, means for positively holding one of said sets of jaws constant position during the travel of said member, and means for yieldingly holding the other set of jaws against the filling on the bobbin.

5. Ina bobbin stripping machine, the combination of a slide movable longitudinally with two pairs of jaws carried by the slide, the jaws of one of said pairs having knife edges for engaging the filling and removing it from the large end of the bobbin during the first part of the stroke, and the other pair of jaws being spring -pressed and length.

binationwith a support for a bobbin and a slidemovable longitudinally, of two pairs of jaws carried/by said slide, means whereby at the beginning of the stroke of the slide one pair of jaws is first caused to move toward the large end of the bobbin to remove the filling therefrom and held in that position during the remainder of the stroke, and means whereby the second pair of jaws is caused to engage the bobbin in the same position after the first pair of jaws has passed. I r

7. In abobbin stripping machine, the com bination with a support for a bobbin, and a slide movable longitudinally, oftwo pairs of jaws carried by said slide, means whereby at'the'beginning of the stroke of the slide one pair of jaws is first caused to move toward the large end of the bobbin to reof jaws pivoted on the slide, each having a gear segment connected therewith, said gear segments meshing with each other and one of them with the rack, and means for operating the rack as the slide reciprocates.

9. In a bobbin stripping machine, the combination of a reciprocable slide, a rack mounted thereon and movable transversely with respect to the direction of motion of the v slide, a pair of jaws pivoted on the slide,

each having a gear segment thereon, said gear segments meshing with each other and one of them with the rack, a projection on the back of the rack, and a double cam track for receiving said projection and operadapted to engage the bobbin throughout its ating the slide, said cam track having means for guiding the projection from one part to f the other at'the end ofthe stroke.

f 10.In1 a bobbin 1 strip-ping machine, the combination of a head with jaws movably mounted in said head and located in position to engage the side of a bobbin forstri'p' V ping the filling therefrom, the inner surface of said head and j aws-having-a continuous *set of teeth thereon.

11;] A jaw inechanism'for a bobbin strip-j i ping machine comprising a pairof semicylindrical heads having an aXial passage thereth'rough for receiving a bobbin, each head having perforations therethrough' arranged radially,a jaw ineach of saidupere heads each having a longitudinal .row of perforations therein extending radially, a

. jaw loosely mounted in each perforation,

forcing said jaws inwardly.

each jawhaving a series of transverse teeth on its inner face, and yielding means for '13. In a bobbin stripplng .inachine',; the

combination ofa'pair of heads having a space between thernfor receiving the bobbin, each head having a series of loosely mounted jaws arranged longitudinally thereon and adapted to project through the inner face of the head, each jaw being provided with a series oftransverse teeth on its inner end.

let. In a bobbin stripping machine, the

combination of a pair of heads space between them for receiving the bobbin,

each head having a'series'of loosely mounted jaws'arranged longitudinally: thereon and adaptedto projectthrough the inner face' of the head, the inner surfaces ofthe heads v andjaws'being concave, .and teeththereon constituting parts of screw threads. L 15. A bobbin stripping memberrrfor a majaws mounted loosely I in said cavities and adapted to moveinwardly beyond saidco'nhead having a longitudinal rod'th'erein' passe '45 v I chine of the class described, comprising a head having a concave inner face and pro-Q. Q I vided with a'series of'ca itiea-i-a series of- .3 I

1 0 1 cave face,'-each aw having also-a concave face and provided'with transverse teeth); y k 16. A bobbinstripping member fora ma J g j chine of theclass described comprisinggafl. head having a concave inner facel'and -.pro-" vided with a series of cavities, iafseri'esof .jaws mounted loosely in said cavities, said ing throughsaidjaws andeach jaw having] ahole therethrough for the rod, said holes a being larger than the rod topermit play. of .f the jaws, and springs for forcing the jaws inwardly.

In testimony whereof Ifhave hereunto set my hand,"in the presence oftwo subscribing Witnesses. Y

Witnesses: J. KELLIHER, M. J. PERA LT, Jr.

. Washington, 11c.

DANIEL L. CHANDLER: j

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